THE DEFINITIVE GUIDE TO K2 POWDER

I've recently commenced supplementig K2 (from natto) And that i get menstrual-like cramps (even in the middle of a cycle) since the 1st working day of doing this. I don’t get any cramps if I skip taking vit K2. Shall I prevent using the supplemnt?Irrespective, the vitamin K in butter is mostly K1 whose origin is grass and MK-4 whose origin is con